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T. Zewotir · SciRah

Researcher profile · Semantic Scholar

T. Zewotir

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T. Zewotir — researcher profile on SciRah

h-index: 15
Works: 93
Citations: 781

Most-cited papers

Decomposing the urban–rural inequalities in the utilisation of maternal health care services: evidence from 27 selected countries in Sub-Saharan Africa
Oduse Samuel, T. Zewotir, D. North
2021Reproductive Health107 citations Open access
Semantic Scholar
Influence Diagnostics for Linear Mixed Models
T. Zewotir, J. Galpin
200554 citations
Semantic Scholar
Determinants of optimal adherence over time to antiretroviral therapy amongst HIV positive adults in South Africa: A longitudinal study
D. Maqutu, T. Zewotir, D. North, K. Naidoo +1 more
2011Aids and Behavior49 citations Open access
Semantic Scholar
A unified approach on residuals, leverages and outliers in the linear mixed model
T. Zewotir, J. Galpin
200738 citations
Semantic Scholar
Additive main effects and multiplicative interactions model (AMMI) and genotype main effect and genotype by environment interaction (GGE) biplot analysis of multi-environmental wheat variety trials
Asnake Worku. Negash, H. Mwambi, T. Zewotir, Girma Taye
201336 citations Open access
Semantic Scholar
Factors affecting first-month adherence to antiretroviral therapy among HIV-positive adults in South Africa
D. Maqutu, T. Zewotir, D. North, K. Naidoo +1 more
2010African journal of AIDS research : AJAR36 citations Open access
Semantic Scholar
Impact of ambient air pollution exposure during pregnancy on adverse birth outcomes: generalized structural equation modeling approach
A. Mitku, T. Zewotir, D. North, P. Jeena +4 more
2023BMC Public Health35 citations Open access
Semantic Scholar
Quasi-Poisson versus negative binomial regression models in identifying factors affecting initial CD4 cell count change due to antiretroviral therapy administered to HIV-positive adults in North–West Ethiopia (Amhara region)
Awoke Seyoum, Principal Ndlovu, T. Zewotir
2016AIDS Research and Therapy29 citations Open access
Semantic Scholar
The impact of antenatal care on under‐five mortality in Ethiopia: a difference‐in‐differences analysis
Samuel Oduse, T. Zewotir, D. North
2021BMC Pregnancy and Childbirth26 citations Open access
Semantic Scholar
Examination of Entropy balancing technique for estimating some standard measures of treatment effects: A simulation study
L. Amusa, T. Zewotir, D. North
201922 citations
Semantic Scholar
Modelling fertility levels in Nigeria using Generalized Poisson regression-based approach
Jecinta U. Ibeji, T. Zewotir, D. North, L. Amusa
202021 citations Open access
Semantic Scholar
The time to degree or dropout amongst full-time master's students at University of KwaZulu-Natal
T. Zewotir, D. North, M. Murray
201521 citations Open access
Semantic Scholar
Modeling Viral Suppression, Viral Rebound and State-Specific Duration of HIV Patients with CD4 Count Adjustment: Parametric Multistate Frailty Model Approach
Zelalem G. Dessie, T. Zewotir, H. Mwambi, D. North
2020Infectious Disease and Therapy17 citations Open access
Semantic Scholar
Student success in entry level modules at the University of Kwazulu-Natal
T. Zewotir, D. North, M. Murray
201117 citations
Semantic Scholar
Multiple Cases Deletion Diagnostics for Linear Mixed Models
T. Zewotir
200815 citations
Semantic Scholar
Variation in growth potential between hybrid clones of Eucalyptus trees in eastern South Africa
S. Melesse, T. Zewotir
2017Journal of Forest Research13 citations
Semantic Scholar
Teaching Statistics to Social Science Students: Making It Valuable.
D. North, T. Zewotir
200813 citations Open access
Semantic Scholar
Evaluation of Linear Mixed Model Case Deletion Diagnostic Tools by Monte Carlo Simulation
T. Zewotir, J. Galpin
200612 citations
Semantic Scholar
Modeling Differential Effects of Maternal Dietary Patterns across Severity Levels of Preterm Birth Using a Partial Proportional Odds Model
A. Mitku, T. Zewotir, D. North, P. Jeena +1 more
2020Scientific Reports11 citations Open access
Semantic Scholar
Opportunities and challenges for statistics education in South Africa
T. Zewotir, D. North
201111 citations Open access
Semantic Scholar
Building Capacity for Developing Statistical Literacy in a Developing Country: Lessons Learned from an Intervention.
D. North, I. Gal, T. Zewotir
201410 citations
Semantic Scholar
Additive mixed models to study the effect of tree age and climatic factors on stem radial growth of Eucalyptus trees
S. Melesse, T. Zewotir
2018Journal of Forest Research9 citations
Semantic Scholar
Exchangeability, extreme returns and Value-at-Risk forecasts
Chun-Kai Huang, D. North, T. Zewotir
20179 citations
Semantic Scholar
The application of subset correspondence analysis to address the problem of missing data in a study on asthma severity in childhood
Gillian M. Hendry, D. North, T. Zewotir, R. Naidoo
2014Statistics in Medicine9 citations
Semantic Scholar
Spatiotemporal Variation and Predictors of Unsuppressed Viral Load among HIV-Positive Men and Women in Rural and Peri-Urban KwaZulu-Natal, South Africa
Adenike O. Soogun, A. Kharsany, T. Zewotir, D. North +2 more
2022Tropical Medicine and Infectious Disease8 citations Open access
Semantic Scholar
The spatial modification of the non-linear effects of ambient oxides of nitrogen during pregnancy on birthweight in a South African birth cohort.
A. Mitku, T. Zewotir, D. North, P. Jeena +3 more
2020Environmental Research8 citations
Semantic Scholar
An Evaluation to Determine the Strongest CD4 Count Covariates during HIV Disease Progression in Women in South Africa
P. Tinarwo, T. Zewotir, N. Yende-Zuma, N. Garrett +1 more
2019Infectious Disease and Therapy8 citations Open access
Semantic Scholar
INTRODUCING STATISTICS AT SCHOOL LEVEL IN SOUTH AFRICA
D. North, T. Zewotir
20068 citations
Semantic Scholar
Trends and Adaptive Optimal Set Points of CD4+ Count Clinical Covariates at Each Phase of the HIV Disease Progression
P. Tinarwo, T. Zewotir, D. North
2020AIDS Research and Treatment7 citations Open access
Semantic Scholar
Evaluation of Subset Matching Methods: Evidence from a Monte Carlo Simulation Study
L. Amusa, T. Zewotir, D. North
2019American Journal of Applied Sciences7 citations Open access
Semantic Scholar
Mixed model with spatial variance-covariance structure for accommodating of local stationary trend and its influence on multi-environmental crop variety trial assessment
Asnake Worku. Negash, H. Mwambi, T. Zewotir, G. Aweke
20147 citations Open access
Semantic Scholar
The effect of correlated climatic factors on the radial growth of eucalypt trees grown in coastal Zululand of South Africa
S. Melesse, T. Zewotir
20137 citations Open access
Semantic Scholar
Developing clinical prognostic models to predict graft survival after renal transplantation: comparison of statistical and machine learning models
G. Mulugeta, T. Zewotir, Awoke Seyoum Tegegne, M. Muleta +1 more
2025BMC Medical Informatics and Decision Making6 citations Open access
Semantic Scholar
Application of Support Vector Machine Regression and Partial Least-Square Regression Models for Predicting Sugarcane Leaf Nutrients Content Using Near Infra-Red Spectroscopy
A. Mitku, L. Titshall, T. Zewotir, D. North
2023Communications in Soil Science and Plant Analysis6 citations
Semantic Scholar
Association of medical male circumcision and sexually transmitted infections in a population-based study using targeted maximum likelihood estimation
L. Amusa, T. Zewotir, D. North, A. Kharsany +1 more
2021BMC Public Health6 citations Open access
Semantic Scholar
Quasi-Poisson versus negative binomial regression models in identifying factors affecting initial CD4 cell count change due to antiretroviral therapy administered to HIV-positive adults in North-West Ethiopia (Amhara region).
Awoke Seyoum, Principal Ndlovu, T. Zewotir
2016AIDS Research and Therapy6 citations
Semantic Scholar
Analysis of attrition and retention rates using the generalized linear model
T. Zewotir, D. North
20156 citations
Semantic Scholar
Fitting three parameter growth curves using a nonlinear mixed effects modelling approach
S. Melesse, T. Zewotir
20156 citations
Semantic Scholar
Multiple-start balanced modified systematic sampling in the presence of linear trend
L. Naidoo, D. North, T. Zewotir, Raghunath Arnab
20156 citations
Semantic Scholar
Path models-approach to the study of the effect of climatic factors and tree age on radial growth of juvenile Eucalyptus hybrid clones
S. Melesse, T. Zewotir
20135 citations
Semantic Scholar
Modelling Research Productivity Using a Generalization of the Ordered Logistic Regression Model
D. North, T. Zewotir, M. Murray
20125 citations
Semantic Scholar
Focus on the statistical education of prospective engineers in South Africa
T. Zewotir, D. North
20075 citations Open access
Semantic Scholar
A new data-standardization procedure for comprehensive outlier detection in correlated meteorological sensor data
Natalie D. Benschop, T. Zewotir, R. Naidoo, D. North
2025Advances in Statistical Climatology, Meteorology and Oceanography4 citations Open access
Semantic Scholar
INFINITESIMAL MODEL PERTURBATION INFLUENCE IN THE LINEAR MIXED MODEL
T. Zewotir
20074 citations
Semantic Scholar
Modelling children ever born using performance evaluation metrics: A dataset
Jecinta U. Ibeji, T. Zewotir, D. North, L. Amusa
2021Data in Brief3 citations Open access
Semantic Scholar
Effects of prenatal exposure factors on birth outcomes through mediation of favorable fetal growth conditions using structural equation modeling
A. Mitku, T. Zewotir, D. North, P. Jeena +1 more
2021PLoS ONE3 citations Open access
Semantic Scholar
Medical male circumcision and HIV prevention among men in Kwazulu-Natal, South Africa: A propensity score analysis
L. Amusa, T. Zewotir, D. North, A. Kharsany +1 more
20213 citations Open access
Semantic Scholar
A conditional extreme value approach to value-at-risk estimation with exchangeable innovations
Chun-Kai Huang, D. North, T. Zewotir
20163 citations
Semantic Scholar
Modelling household electricity consumption in eThekwini municipality
S. Reade, T. Zewotir, D. North
20163 citations Open access
Semantic Scholar
A Machine Learning Web Application to Estimate Listing Prices of South African Homes
Dane Bax, T. Zewotir, D. North
2020Journal of African Real Estate Research2 citations Open access
Semantic Scholar

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P. Jeena — researcher profile on SciRah

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L. Amusa — researcher profile on SciRah

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J. Galpin — researcher profile on SciRah

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H. Mwambi — researcher profile on SciRah

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M. Murray — researcher profile on SciRah

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A. Kharsany — researcher profile on SciRah

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D. Maqutu — researcher profile on SciRah

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